so we went to the coca-cola company and said we have a piece of technology, we want to take it out of the framework of being a science fair project and give it to the opportunity to take on the goliath problem of the 21st century, bad water, we call the project slingshot because slingshot was the little piece of technology that was given to david and as the kid i remember the story of david and goliath and the moral to me was you use technology properly, slingshot and you will take out goliath. >> rose: so what do we have here? i want to show it in just a moment. >> so in this little accurate scale model of a shipping container which could be put into a village, is -- >> rose: shipping container. there is an actual model of a standard shipping container, this is eight feet by ten feet by 20 feet, here is the actual scale model next to a person of the slingshot. >> rose: right. >> it makes 1,000-liters of water a day and even if you closeup at night and hopefully the women that will run this downtown, it will sit inside here all night filling up thousand liter reservoirs that are acces